125 with over 15bhp

[wupwup]

just saw a hyosung gt on egay wich im looking out for for about a grand. bit rusted and possibly an import but worth a second thought. anyway if i replaced the exhaust with a preformance can / pipes it would have over 15 bhp and technicaly illegal on a cbt. would it matter and would they be able to tell the bhp after a crash e.c.t? cheers

[Itchy]

I always thought it was 12bhp, but like you are going to notice the difference between 12 and 15bhp. The cost to get that extra 3bhp is simply not worth it, might as well go take your full bike test. Also such mods to get those extra 3 may not work as claimed!.

Now the RS125 which can get you 25bhp.... however this mods will be very obvious!.
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Spain 2008France 2007Big one 2009 We all die. The goal isn't to live forever, the goal is to create something that will. In the end, your life will flash before your eyes. Make sure it is worth watching.

[Rob W]

Not really much point putting a 'performance' can/pipes on something like that mate, just ride it as it is.

Probably nowhere near 14.6bhp in the first place, and IMO unless you killed someone I doubt they'd bother checking the bike over.
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TS50 > Senda 125 > ZXR400 > CB-1 > GSX-R1000 > Bandit 600 > ZXR750 H1 > GSX-R750 SRAD > '98 RR-W Fireblade > T595 Daytona > Hornet 900 > '04 Fireblade > GSX-S1000F (x2) > '23 XSR900

[wupwup]

[Rob W]

[wupwup]

https://cgi.ebay.co.uk/2008-HYOSUNG-GT-125-COMET-BLUE_W0QQitemZ200441822029QQcmdZViewItemQQptZUK_Motorcycles?hash=item2eab437b4d

there you go. reason im asking is someone on here got theres going 90 mph with a ton of mods that got it up to 18bhp! obviously i have neither the money or inclination to take it that far but if i did go slightly over the limit would it matter? i probably wont get that bike as im not ready to buy yet and it looks in shit state but it got me thinking

[P.addy]

I had upjetted carbs, different sprockets, sv650 k&n filter, straight through pipes and a scorpion can.

Didnt matter really...police wont bother you, neither will the MOT centre, no one will care, its like a ped doing over 30mph...police couldnt care mate.

Also if its that bike in the ad that does 90, you are wrong, that exhaust is standard, and VERY VERY restrictive!

[Kickstart]

Hi

Learner limit is 11kW, which is just under 15hp.

I wouldn't expect a replacement exhaust to make any great difference to power, unless the bike is deliberatly restricted in the exhaust (and being a 4 stroke 125 designed for the learner market I would doubt it is restricted).

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[P.addy]

[Kickstart]

Hi

If the bits in each pipe are the same as the NSR restriction then they will easily flow enough for a 125 4 stroke. Quite possible that they are there to create a pressure wave at the right point for peak power and give the bike some power.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[wupwup]

[Kickstart]

Hi

A performance can will be a LOT cheaper. Race cans are nothing special, just a couple of end caps, an outer tube with a perforated inner tube and a bit of cheap baffle packing material. Little engineering and no real need to do anything difficult like keep it quiet (while some have removeable baffles, most probably make far less power than standard when the baffle is in place).

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[Ingah]

Are you declaring your modification to your insurers, or are you going to ride with invalidated insurance due to your failure to disclose a modification? (and also by the sound of it, contrary to the terms of your license)

All insurers are the same in this respect, if they get the opportunity, they can and they will bend you over... (it'll be expensive, and it can get you 6 points/banned for no insurance/license).

You'd have to be unlucky / involved in a smash, but stranger things have happened.
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-- Ingah

[P.addy]

[rac3r]

Just add the can for sound, it will sound pretty good you'll be surprised
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Bikes : 2006 CBR125R - 2004 Monster 620ie - 2004 ZX-6R B1H - 2005 Monster S2R 800 - 2011 Street Triple - 2009 Streetfighter 1098 - 2014 ZX-6R 636